Pneumatic tire.



E. M. STEWART.

PNEUMATIC TIRE.

APPLICATION FILED NOV-28, 1914.

Patented Mar. 28

val/1112,1429!!! Elmo/k420i Si ma/r2 EDGAR STEWART, or nonsense, IDAHO;

To all whom it may concern Be it known that I, EDGAR M. Srnwanr, acitizen of the United States, residing at Montpelier, in the county ofBear Lake and State of Idaho, have invented new and useful Improvementsin Pneumatic Tires, of which the following is a specification.

This invention relates to pneumatic tires, the object in view being toproduce a tire composed of an annular series of independent sectionseach independently attached or fastened to the rim of the wheel and eachsection being independently inflated so that in case of a puncture orblow out, only a single section of the tire will be affected, enablingthe car to proceed on its'way without repairing the blow out or punctureuntil a suitable repair place is reached or the operator has time tomake a repair on the road.

lVith the above and other objects in view, the invention consists in thenovel construction, combination and arrangement of parts, as hereindescribed,'illustrated and claimed.

In the accompanying drawings: Figure 1 is a fragmentary side elevationof a vehicle wheel showing the tire of this invention applied thereto.Fig. 2 is a. fragmentary plan view of the tire partly broken away toshow the construction of the clencher rim. Fig. 3 is a vertical crosssection through the tire and rim. Fig. 4 is a verticallongitudinalsection including one of the tire sections.

The tire contemplated in this invention is designated as a whole at Aand is composed of an annular series of sections a each of which isindependent of the other.

Each section it comprises an outer casing 1 and an inner tube 2. Theouter casing 1 is closed around the side walls thereof, the same as anordinary pneumatic tire and is also provided with closed end walls 3which are slightly separated from each other when all of the sectionsare combined and applied to the wheel rim as shown in Fig. l. The endwalls 3 are on a line oblique to the length of the tire as a whole, theobject being to avoid a transverse line of division between the sectionsof the tire for the purpose of giving a more even bearing along theadjacent edges of the sections and correspondingly increasing the lifeand durability of the complete tire. Furthermore, the gap caused by thedeflation of any one of the sections of the tire is minimized betweenthe sections lying at opposite sides PNEUMATIC TIRE.

Specification of Letters Patent. Patented Mar. 28, i i I Applicationfiled :Novenibcr 2s, 1914.. SerialNo. 374,441. i

of the deflated section, resulting in extend.- I

ing the supporting area adjacent to said deflated section so as toprevent the rim of the wheelfrom striking against the ground II rCZLS-Qthe vehicle continues 1n operation. ltach mner tube section 2 Is alsocomplete in itselfand fits its respective outer secv tion 1.

The rim designated generally'at'B com prises side clencher flanges 4:and in addition thereto other clencher flanges 5 which extend at anangle to the side flanges 4 and obliquely across the rim as clearlyindicated in the broken away portion of Fig. 2. In this way fourclencher flanges are provided on each rim section to receive acorresponding number of clencher beads 6 on each of the tire sections a.i

The means for holding the tire sections in place independently of eachother and so that any one section may be. removed from if the wheelwithout disturbing the remaining sections consists of a clamping plate 7as shown in Fig. 3, said clamping plate having a hole through whichthemetal valve tube 8 passes. The plate 7 is of such size and shape asto engage the inner faces of all of the marginal clencher portions ofthe outer case, preventing the heads 6 from moving out of the rimflanges when subjected to lateral thrusts. The valve tube 8 is ofsuflicient length to extend through the felly 9 of the wheel and isthreaded to receive a nut 10, enabling the clamping plate 7 to bedrawntightly against the marginal portions of the outer casing 1. Thevalve tube 8 per--.

mits the inner tube 2 to be inflated and also has the function ofholding the clamping plate 7 in a fixed position after the'nut 10 hasbeen tightened. Should any section of the tire be subjected to apunctureor blow out, it is only necessary to remove the nut 10 and push the tube8 outwardly through the felly 9 and rim B. The plate 7 is free to 'moveaway from contact with the marginal portionsof the outer casing landthis en ables the clencher beads of the outer casing 1 to be removedfrom the clencher, flanges of the rim. The deflation of one section willnot interfere with running the wheel as in the preferred embodiment ofthe invention from coming in contact with the ground.

In case a puncture or blow out is repaired on the road, it will only benecessary to inflate one section of the tire instead of the whole tire.The invention also adds greatly to the safety of the occupants of themachine for the reason that in case of a blow out or puncture whiletraveling at high speed, only. one section of the tire will be afiectedand therefore the remainder of the tire will be securely held on the rimof the wheel.

What I claim is A pneumatic tire comprising an annular series ofindependent sections each of which embodies an outer case, and an innertube, the outer case being 01 the clencher type, a valve tube attachedto the inner tube, and

Copies of this patent may he obtained for five cents each, by addressingthe Commissioner of Patents,

a clamping plate between the inner tube and beaded margins of the outercase and having i extending at an angle to said side flanges,

the outer case sections being provided with clencher beads correspondingin number and arrangement with said ciencher flanges.

In testimony whereofI aiiix my signature in presence 0t two wltnesses.

EDGAR M. STEWART.

Witnesses J. W. DOWNING, H. W. FINDLEY.

Washington, D. 0.

